As a reminder, you can follow the general Mozilla news, team work and individual contributors work on Planet Mozilla (which has a RSS feed you can subscribe to). We have 1 to 2 blog posts per day on Planet. planet.mozilla.org
Here's a quick rundown of what we delivered as part of Interop 2025, and what's planned for Interop 2026!
Screenshot of the AI Controls panel in Firefox Nightly preferences
AI Controls are available in Firefox Nightly preferences!
Documentation: support.mozilla.org/kb/firefox-a...
If you find a bug, please report it on Bugzilla via this link: mzl.la/AIControlsFi...
Thanks!
[Nightly Blog] Profile, search and wallpaper bug fixes plus more! – These Weeks in Firefox: Issue 195 blog.nightly.mozilla.org/2026/02/02/p...
AI Controls (formally 'kill switch') are landing in today's Firefox Nightly, and will land with Firefox 148 later this month.
[Nightly Blog] Take note – Split View is ready for testing! – These Weeks in Firefox: Issue 194 blog.nightly.mozilla.org/2026/01/26/t...
Brussels, here we come! 🦊🇧🇪
Mozilla will be at @fosdem.org next weekend. Swing by our stand to meet our staff and volunteers, and join the "Browser and Web Platform" devroom on Saturday!
Track schedule: fosdem.org/2026/schedul...
[Nightly Blog] Introducing Mozilla’s Firefox Nightly .rpm package for RPM based linux distributions! blog.nightly.mozilla.org/2026/01/19/i...
Did you file a bug?
[Nightly Blog] Phasing Out the Older Version of Firefox Sidebar in 2026 blog.nightly.mozilla.org/2026/01/13/p...
[Nightly Blog] Closing out 2025 Strong – These Weeks in Firefox: Issue 193 blog.nightly.mozilla.org/2025/12/19/c...
[Nightly Blog] Getting Better Every Day – These Weeks in Firefox: Issue 192 blog.nightly.mozilla.org/2025/11/24/g...
![Firefox JSON Viewer opened for the html entites JSON file
We can see the various properties of the JSON file, which are all objects containing a "characters" and a "codepoints" properties.
The Console is opened at the bottom. In it, we can see a console message explaining that some data is available (`$json.data` - the parsed JSON object, $json.text` - the original JSON text and `$json.headers` - HTTP request and response headers)
There's a console evaluation done with the following snippet:
```js
Object.entries($json.data)
.filter(([k, v]) => v.codepoints.length > 1)
.map(([k, v]) => ({characters: v.characters, htmlEntity: k, codepoints: v.codepoints}))
```
and the result shows an array of objects containing "characters", "htmlEntity" and "codepoints" properties.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:l6jizqbrtfnhnrd7vmsqmi3n/bafkreigizqr72frwj6qa53onh2tskqmcmrydexkzeydrkrarwiuoyulcmq@jpeg)
Firefox JSON Viewer opened for the html entites JSON file We can see the various properties of the JSON file, which are all objects containing a "characters" and a "codepoints" properties. The Console is opened at the bottom. In it, we can see a console message explaining that some data is available (`$json.data` - the parsed JSON object, $json.text` - the original JSON text and `$json.headers` - HTTP request and response headers) There's a console evaluation done with the following snippet: ```js Object.entries($json.data) .filter(([k, v]) => v.codepoints.length > 1) .map(([k, v]) => ({characters: v.characters, htmlEntity: k, codepoints: v.codepoints})) ``` and the result shows an array of objects containing "characters", "htmlEntity" and "codepoints" properties.
The @firefoxdevtools.bsky.social JSON viewer got better in @firefoxnightly.bsky.social : the console offers access to the original json data via `$json`.
This allows to easily manipulate the underlying data to get what you want
Css @ scope was added in Nightly yesterday bugzilla.mozilla.org/1991105 should ship in 146 next month
[Nightly Blog] Extensions UI Improvements and More – These Weeks in Firefox: Issue 191
blog.nightly.mozilla.org/2025/10/27/e...
[Nightly Blog] Smarter Search, Smoother Tools – These Weeks in Firefox: Issue 190 blog.nightly.mozilla.org/2025/10/06/s...
We are woking on this regression,thttps://bugzilla.mozilla.org/show_bug.cgi?id=1992436
Thanks!
[Nightly Blog] Firefox 144 Highlights: Faster Add-ons, Smarter DevTools, and Tab Group Boosts – These Weeks in Firefox, Issue 189 blog.nightly.mozilla.org/2025/09/22/f...
[Nightly Blog] Add-ons, Fixes, and DevTools Snacks – These Weeks in Firefox: Issue 188 blog.nightly.mozilla.org/2025/09/19/a...
[Nightly Blog] Webcam previews and more! – These Weeks in Firefox: Issue 187 blog.nightly.mozilla.org/2025/09/12/w...
Firefox Security & Privacy newsletter 2025 Q2 | Attack & Defense
attackanddefense.dev/2025/07/17/f...
Fast, private and secure (pick three): Introducing CRLite in Firefox
blog.mozilla.org/en/firefox/c...
[Nightly Blog] Custom Profile Avatars Arrive in Nightly – These Weeks in Firefox: Issue 186
blog.nightly.mozilla.org/2025/08/04/c...
[Nightly Blog] Copy Link to Highlight in Nightly – These Weeks in Firefox: Issue 185
blog.nightly.mozilla.org/2025/07/28/c...
As of bugzilla.mozilla.org/1944719 this is now possible
A test page that shows which features of the View Transition API your browser supports, here showing Firefox Nightly (142). It supports not only same-document view transitions but also the view-transition-class property that is specified in the Level 2 specification.
Just spotted: Firefox Nightly already supports view-transition-class from the Level 2 spec.
